Pyronices Estro Burner Control,Pyronics Estro-A,Pyronics ... · tion, the operator must avoid all contact with the burner and its control devices during the ignition phase and while

Electronics

Microprocessor operated

burner control deviceESA ESTRO (E7014 rev. 03 - 22/10/2010)

ESA ESTRO - E7014 rev. 03 - 22/10/10

www.esapyronics.com 2

CERTIFICATIONS:

ESA ESTRO complies to the EN298 as certificate I7800 issued by notify body 0694. ESA

ESTRO is in accordance to European Union directives: Directive on appliances burning gase-

ous fuels 2009/142/CE, Low voltage directive 2014/35/UE, Electromagnetic Immunity

2014/30/UE, in conjunction with EN298, EN230 and EN746-2.

The products conform to the requests for the Euroasia market (Russia, Belarus and

Kazakhstan).

The products conform to the Australian standards requirements according to the AGA.

The products conform to the American standards requirements according to the CSA US.

GENERAL WARNINGS: GENERAL NOTES:

¾¾ All installation, maintenance, ignition and setting mustbe performed by qualified staff, respecting the norms

present at the time and place of the installation.

¾¾ To avoid damage to people and things, it is essentialto observe all the points indicated in this handbook. The

reported indications do not exonerate the Client/User

from observing general or specific laws concerning acci-

dents and environmental safeguarding.

¾¾ The operator must wear proper DPI clothing (shoes,helmets...) and respect the general safety, prevention

and precaution norms.

¾¾ To avoid the risks of burns or high voltage electrocu-tion, the operator must avoid all contact with the burner

and its control devices during the ignition phase and

while it is running at high temperatures.

¾¾ All ordinary and extraordinary maintenance must beperformed when the system is stopped.

¾¾ To assure correct and safe use of the combustionplant, it is of extreme importance that the contents of this

document be brought to the attention of and be meticu-

lously observed by all personnel in charge of controlling

and working the devices.

¾¾ The functioning of a combustion plant can be dange-rous and cause injuries to persons or damage to equip-

ment. Every burner must be provided with certified com-

bustion safety and supervision devices.

¾¾ The burner must be installed correctly to prevent anytype of accidental/undesired heat transmission from the

flame to the operator or the equipment.

¾¾ The performances indicated in this technical docu-ment regarding the range of products are a result of

experimental tests carried out at ESA-PYRONICS. The

tests have been performed using ignition systems, flame

detectors and supervisors developed by ESA-PYRO-

NICS. The respect of the above mentioned functioning

conditions cannot be guaranteed if equipment, which is

not present in the ESA-PYRONICS catalogue, is used.

¾¾ In accordance to the internal policy of constant quali-ty improvement, ESA-PYRONICS reserves the right tomodify the technical characteristics of the present docu-ment at any time and without warning.

¾¾ It is possible to download technical sheets whichhave been updated to the latest revision from the www.esapyronics.com website.

¾¾ The products manufactured by ESA-PYRONICShave been created in conformity to the UNI EN 746-2:2010 Norms: Equipment for industrial thermal process- Part 2: Safety requirements for combustion and themovement and treatment of combustible elements. Thisnorm is in harmony with the Machine Directive2006/42/CE. It is certified that the products in questionrespect all the requirements prescribed by the abovementioned Norms and Directives.

¾¾ Certified in conformity with the UNI EN ISO 9001Norm by DNV GL.

To dispose of the product, abide by the local legislations

regarding it.

DISPOSAL:

ASSISTANCE/CONTACTS:

Headquarters:

Esa S.p.A.

Via Enrico Fermi 40

24035 Curno (BG) - Italy

Tel +39.035.6227411

Fax +39.035.6227499

[email protected]

International Sales:

Pyronics International s.a.

Zoning Industriel, 4ème rue

B-6040 Jumet - Belgium

Tel +32.71.256970

Fax +32.71.256979

[email protected]

www.esapyronics.com

ESA ESTRO - E7014 rev. 03 - 22/10/10


APPLICATIONS

ESA ESTRO is a microprocessor operated device, desi-

gned to control gas and oil fired burners, which are

discontinuously operated. This device warrants the safe

operation of the combustion unit at one or two stages

(pilot/main burners), it controls the air flow rate and

allows the detection of flame presence through ionization

(electrodes) or UV radiation (UV-scan). ESA ESTRO is

equipped for serial communication, allowing a remote

burner control and operation. The thermal resistant case

of ESA ESTRO allows its installation on burner proximity,

provided that the environment temperature remains

below 60°C.

¾¾One or two stage (pilot/main) discontinuous burners.

¾¾Flame detection by means of rod, unirod and UV scan (also combined).

¾¾Packaged burners managing a complete ignition cycle (blower, air damper, air pressure switch).

¾¾Burners with air valve control for furnace purging, bur-ner ignition and thermoregulation (heating/cooling) via

external regulation device.

¾¾Combustion plant with burner controller via digital signal or ECS serial communication.

¾¾Customized burner operation through programmableexpansion cards.

CHARACTERISTICS

MAIN:

¾¾Voltage supply: 115 Vac or 230 Vac +10 ÷ -15%

¾¾Frequency: 45÷65 Hz

¾¾Power supply mode: phase-neutral, non suitable for phase-phase

¾¾Neutral type: suitable for ground as well as nonground neutral connection

¾¾Power consumption without outlets: 5 VA max

¾¾Operating temperature: 0÷60 °C

¾¾Storage temperature: -20÷80 °C

¾¾Protection class: IP54 (when wiring, use adequate connectors)

¾¾Mounting position: any

¾¾Installation environment: not suitable for ATEX classified area and corrosive area

¾¾Case: Thermosetting with fiberglass

¾¾Size: 200×120×93 mm

¾¾Weight: 1.300 g

¾¾Approvals according EN298 and EN230: BOOLXNprogrammable

F7014I03

F7014I04

ESA ESTRO - E7014 rev. 03 - 22/10/10


CHARACTERISTICS

INPUT AND OUTPUT CONNECTIONS:

¾¾Flame detection probe voltage: max 300 Vac

¾¾Minimum ionization current: 2,4 µA ± 0,3 µA

¾¾Flame probe current limit: 1 mA

¾¾Flame signal display: 0 ÷ 90 µA

¾¾Flame probe type: electrode or UV scan model ESA UV-2

¾¾Rod or UV scan probe line length: < 30 m

¾¾High voltage ignition transformer line length: 2 m max

¾¾Insulation among probe conductors: > 50 MΩ (double-insulation or double-protection cables)

¾¾Digital input signal voltage: same as supply voltage

¾¾Digital input power consumption: max 5mA

¾¾Filter for lock/reset input: RC 100 Ω - 0,47 µF - 250 Vac

¾¾Output signal voltage: same as supply voltage

¾¾Current per each output signal: 1.5 A

¾¾Current per output signals (total): 4 A per 10 sec. / min.

¾¾Load protection fuse: 4 A fast

¾¾Device protection fuse: 1 A non replaceable

¾¾Supply voltage expansion card EXP-2 and EXP-4: 24 Vac, 115 Vac, 230 Vac

¾¾Supply voltage expansion card EXP-2 and EXP-4: max 5mA

¾¾Power absorption expansion card EXP-2 and EXP-4: same as supply voltage

¾¾Output signal voltage expansion card EXP-2 and EXP-4: 4 A (unprotected by inner fuse)

PARAMETERS:

¾¾Pre-purge time: 0 ÷ 255 s

¾¾First safety time*: 1 ÷ 25 s

¾¾Main burner stabilization time*: 0 ÷ 25 s

¾¾Reaction time*: 1 ÷ 20 s

¾¾Post-purge time: 0 ÷ 255 s

¾¾Accepted unlocking: 5 max in 15 min

¾¾Auto shutoff (can be inhibited)*: 1 minimum in 24 hours

¾¾Action at missing flame signal: programmable

¾¾First gas stage actions: programmable

¾¾Air valve operation: programmable

* These parameters must comply to the norms and directives related to the industrial process wherein ESA ESTRO

is adopted as a burner control device.

ESA ESTRO - E7014 rev. 03 - 22/10/10


DESCRIPTION

¾¾ESA ESTRO-A: single stage burner (one gas valve) with air valve operation control. The configuration software allows the proper definition of the air valve operation.

¾¾ESA ESTRO-B: two stage burners (1st pilot, 2nd main). The configuration software sets the operation of the pilot burner (1st stage) in continuous or discontinuous mode.

¾¾ESA ESTRO-C: single stage burner (one gas valve) with output signal for burner "ON" indication.

ESA ESTRO is a device based on microprocessor

technology, provided with input and output connections,

suitable to control discontinuous burner operation (at

ESA

ESTRO

A

IGNITION

TRANSFORMERDIGITAL INPUT

GAS VALVEREMOTE

CONTROL

AIR VALVEFLAME SIGNAL

ALARM

ESA

ESTRO

B

IGNITION


1ST STAGE

GAS VALVE

REMOTE

CONTROL

2ND STAGE

GAS VALVEFLAME SIGNAL

ALARM

ESA

ESTRO

C

IGNITION


GAS VALVEREMOTE

CONTROL

BURNER ONFLAME SIGNAL

ALARM

D701401

D701402

D701403

least one burner shutoff every 24 hours). The instrument-

is available in four different versions.

ESA ESTRO - E7014 rev. 03 - 22/10/10


¾¾ESA ESTRO-Q: single stage burner (one gas valve) dedicated to combustion unit controlled via serial communica-tion modes.

ESA

ESTRO

Q

IGNITION

TRANSFORMER

GAS VALVE

REMOTE

CONTROL

FLAME SIGNAL

Moreover the ESTRO-A, B and C versions allow the set-

ting of an output signal for burner lockout and a digital

input signal. The input signal availability is mandatory

(according EN746-2) for high temperature applications in

order to accomplish the dedicated function. All ESA

ESTRO versions are currently provided with ECS serial

On its front panel ESA ESTRO mounts a programmable

push button, an alphanumeric display of status indica-

tion, a bargraph flame signal indicator and the infrared

communication port for the "on field" configuration of the

instrument. Dedicated configuration software allows the

definition of several operation parameters, according to

process requirements, like the control of the air valve,

FIELDBUS

PL

C

GAS

ESTRO-B

2

5

6

3

4

+1 A-

8 97 B10

GAS

21

GAS

ESTRO-A

N

N

5

6

3

4

+

+

L

L

1-

-

8 97 210

AIR

A1

GAS

ESTRO-C

2

5

6

3

4

+1 A-

8 97 B10

1

GAS

ESTRO-Q

N

+

-

V

N

+L *-

N FT *G

1

ECS BUS

POWER LINE

POWER

SUPPLY

SAFETY

LIMITS

D701404

D701405

communication interface, in order to allow the remote

burner control through ESA ECS or Modbus-RTU proto-

cols. The serial communication allows the complete con-

trol of the combustion unit: burner ignition and shutoff,

first and second gas stage operations, air valve control,

burner supervision and flame detection.

the lockout output signal, the scheduled time for each

phase (according to the ranges defined by the reference

norms). ESA ESTRO is provided with a solid case in a

thermosetting composition, prepared for the ignition

transformer and the output wires for external connec-

tions. Dedicated Expansion cards can be connected to

each ESA ESTRO version, in order to implement additio-

ESA ESTRO - E7014 rev. 03 - 22/10/10


¾¾ESA EXP-2: dedicated to "package burners", controls the air valve or blower start, verifies the air pressure switchsignal and operates the initial purging and burner ignition procedures. Expansion card EXP-2 can also be adopted to

simply operate the air valve (for device versions which differ from ESTRO-A).

¾¾ESA EXP-3: developed to implement serial communication with the most common fieldbus standards.For detailed information please refer to the technical sheet E7015.

ESA

EXP-3PROFIBUS-DP

DEVICE-NET

ETHERNET

¾¾ESA EXP-4: provided with four digital inputs, four digital outputs, one similar input, one similar output and a serialinterface in order to allow remote card control. For detailed information please refer to the technical sheet E7016.

ESA

EXP-4

DIGITAL

OUTPUT 1

DIGITAL

OUTPUT 2

DIGITAL

OUTPUT 3

DIGITAL

OUTPUT 4

DIGITAL

INPUT 1

DIGITAL

INPUT 2

DIGITAL

INPUT 3

DIGITAL

INPUT 4

ANALOGIC

INPUT

ANALOGIC

OUTPUT

ESA

EXP-2

AIR VALVE OR

BLOWERTHERMOSTAT

OPEN AIR

DAMPER

AIR PRESSURE

SWITCH

CLOSE AIR

DAMPER

DAMPER OPEN

POSITION SWITCH

DAMPER CLOSE

POSITION SWITCH

REGOLATION

ENABLED

D701406

D701407

D701408

nal features or specific serial communication modes.

The installation of an expansion card in the ESA ESTRO

device obliges to install the ignition transformer into an

external thermosetting case named ESA TRAFO.

Hereinafter the expansion cards available are described

according to their main characteristics:

ESA ESTRO - E7014 rev. 03 - 22/10/10


ALPHANUMERIC VISUALIZATION AND PUSH BUTTON

DISPLAY

ESA ESTRO displays the status of the burner control device through several symbols. Fixed characters indicate the

normal operating conditions or some instrument failures that cannot be restored, while lockout conditions or restorable

failures are indicated with blinking symbols.

DISPLAY INDICATION DESCRIPTION

FIXED

Self-diagnosis phase; the equipment controls the efficiency of its components.

It is shown every time the equipment is powered or when the burner is re-star-

ted (it lasts about 2 sec).

BLINKING

Manual lockout. The equipment is waiting for the operator's reset command via

the local, remote or serial button. It is shown every time the equipment is powe-

red in case the parameter "Power on" is configured as "Stand-by".

FIXEDBurner shut-off caused by the temp controller. The instrument leads to the bur-

ner in "off" mode, close the air valve and deactivates other exits.

FIXED

Air pressure switch signal waiting phase after air valve activation (or blower

start), or burner shut-off during operation in case of incorrect air pressure

signal. It is shown with expansion cards in case the parameter "Air switch" is

configured as "Waiting".

FIXED

Initial purging: air valve is opening and the maximum opening position is not yet

reached (position switch). It is shown with expansion cards in case the parame-

ter "Air damper" is configured as "Local or Remote".

FIXED

Purge or waiting time before burner ignition. For applications with controlled

cooling slope, only the air valve is open in this phase. At this stage the device

verifies the presence of illegal flames and if necessary generates a shut-off

reaction.

FIXED

Initial purging: air valve is closing and the minimum opening position is not yet

reached (position switch) to warrant ignition at minimum firing rate. It is shown

with expansion cards in case the parameter "Air damper" is configured as

"Local or Remote".

FIXED

Burner ignition at 1st stage, it lasts as long as the first safety time. The device

activates the ignition transformer and the 1st stage gas valve, then deactivates

the transformer and verifies the flame presence.

FIXEDCheck of flame stability at 1st stage, followed by the flame's amplifier control.

This phase is shown also in case of the shut-off of the 2nd stage burner.

FIXED

Normal operation stage for ESTRO-A, ESTRO-C and ESTRO-Q. For the ESA

ESTRO-B version it signals the 2nd stage gas burner and it lasts as long as the

second safety time. In this phase both 1st and 2nd gas valves are activated.

This is the normal operation stage also for ESA ESTRO-B in case the parame-

ter "1st stage" is configured as "Intermittent".

Normal operation stages

ESA ESTRO - E7014 rev. 03 - 22/10/10



FIXED

Normal operation stage for ESA ESTRO-B with only 2nd stage gas burner acti-

vated. The device closes the 1st stage gas valve. This phase is present only in

case the parameter "1st stage" is configured as "Interrupted".

FIXED

Normal operation stage with air valve activated. In case the parameter "Air

switch" is configured as "Lockout or Waiting" the device waits for the air pres-

sure signal before showing this stage, while when configured as "Disable" the

switch to this stage coincides with the air valve opening. This phase is present

only in case the parameter "Air flow control type" is configured as "Discontinue

or Pulse".

FIXED

The device verifies the flame's complete extinguishment in a maximum of 20

sec. after burner shut-off; otherwise a lockout signal for illegal flame presence

is activated.

FIXED

POINT

Furnace purging with air (or waiting phase) after burner shut-off.

During this phase the device doesn't accept any command and shows the sym-

bol referred to the phase or block that activated the shut-off procedure.

FIXED

Burner shutoff phase requested by temp. controller. The device keeps the bur-

ner in "OFF" mode waiting for a new start signal, maintaining the air valve clo-

sed and deactivating the output signals.

BLINKING

POINT

High Temperature Operation mode active. During this phase the device shows

the fixed code related to the active phase.


BLINKING

Manual burner shut-off, generated through local or remote push button during

the normal operation stage. The device keeps the burner in "OFF" mode wai-

ting for a new start signal.

BLINKING

Lockout due to a signal of illegal flame presence, before the burner ignition or

after burner shut-off. The causes could be related to the detection device (fai-

lure) or to a fuel gas leak through the interception solenoid valves.

BLINKING

Lockout due to a failed burner ignition attempt at 1st gas stage. The causes

could be related to the ignition devices (electrode and/or transformer), to incor-

rect air/fuel ratio gases, or to the flame detection device (probe or wiring failu-

re). In the first mentioned case the burner is not ignited, vice-versa, in the

second the flame is present but ESA ESTRO is unable to detect it.

BLINKING

Lockout due to a missing flame presence signal during the normal operation

stage. The causes could be related to an incorrect air/fuel ratio (too rapid flow

variations or ratios out of the flame stability range), or to the flame detection

device (probe position or cleanliness).

Lockouts or failures

ESA ESTRO - E7014 rev. 03 - 22/10/10



BLINKING

Lockout due to the extended absence of serial signals from the remote control

ler, for a longer period of time than the parameter set as "Communication time

out". The causes could be related to incorrect connections or to the serial com-

munication management.

FIXED

Malfunction due to the presence of the air pressure switch signal before the blo-

wer activation. The causes could be related to an incorrect pressure switch

wiring or its failure.

BLINKING

Lockouts due to a malfunctioning of the inner circuit for air pressure switch. If

after attempting to reset, the indication is still present, the device has to be sent

back to the manufacturer for inspection.

BLINKING

Lockout due to the missing signal from the air pressure switch during normal

operation stage. The causes could be related to a pressure switch failure or to

some problems related to the air flow (i.e. filter obstruction).

BLINKING

Lockout due to the presence of the signal of air valve complete opening ("maxi-

mum" position switch) before the device allows the valve opening. The causes

could be related to an incorrect electrical wiring or to an incorrect air valve

switch regulation.

BLINKING

Lockout due to the presence of the signal of air valve complete closure ("mini-

mum" position switch) before the device allows the valve closure. The causes

could be related to an incorrect electrical wiring or to an incorrect air valve

switch regulation.

BLINKING

Malfunction due to the presence of the air pressure switch signal before the blo-

wer activation. The causes could be related to an incorrect pressure switch

wiring or its failure.

BLINKING

Lockout due to the missing electrical absorption from the ignition devices con-

nected to ESA ESTRO (ignition transformer or solenoid valves). The causes

could be related to an electrical connection interruption, to the failure of one of

the ignition devices or to a protection fuse failure.

BLINKING

Lockout due to a malfunctioning of the flame detection probe. The causes could

be related: to a probe failure, to a short circuit between the probe or its connec-

tion to earth (burner body), to the reverse connection of UV tube ESA UV-2, to

an incorrect connection or earthing of the device, or to strong currents on the

furnace mass (welding in progress).

BLINKING

Lockout due to a malfunction of the inner flame amplifier. If after attempting to

reset, the indication is still present, the device has to be sent back to the manu-

facturer for inspection.

BLINKING

Lockout due to a malfunction of the inner circuit related to the temp. controller.

If after attempting to reset, the indication is still present, the device has to be

sent back to the manufacturer for inspection.

BLINKING

Lockout due to an error of the inner memory of the device. The failure could be

temporary or definitive and the causes could be related to incorrect or inade-

quate electrical connections of the device. If after attempting to reset, the indi-

cation is still present, the device has to be sent back to the manufacturer for

inspection.

ESA ESTRO - E7014 rev. 03 - 22/10/10



BLINKING

Lockout due to the missing communication with the installed expansion card

(EXP-2 or EXP-4). The causes could be related to an incorrect configuration or

a failure of the expansion card. A check of the card configuration is required; If

after attempting to reset, the indication is still present, the device has to be sent

back to the manufacturer for inspection.

BLINKING

Lockout due to a malfunctioning of the inner relays. If after attempting to reset,

the indication is still present, the device has to be sent back to the manufactu-

rer for inspection.

FIXED (1)

Malfunction of the local push button or of the digital input signal (for remote

operation): they are fixed on the "pressed" position during the self-diagnosis

phase. The causes could be related to the connection of the remote signal, to

the absence of RC filter, or to a malfunctioning of the push button. In order to

reset the alarm cut off the electrical supply to the device for few seconds.

FIXED (1)

Malfunction due to corruption of the inner memory of the device or to a failure

of the safety circuit. The failure could be temporary or definitive and the causes

could be related to incorrect or inadequate electrical connections of the device.

In order to reset the alarm cut off the electrical supply to the device for few

seconds. If after attempting to reset, the indication is still present, the device

has to be sent back to the manufacturer for inspection.

FIXED (1)

Malfunction due to short-circuit of the inner safety circuit relays. In order to

reset the alarm cut off the electrical supply to the device for few seconds. If after

attempting to reset, the indication is still present, the device has to be sent back

to the manufacturer for inspection.

FIXED (1)

Malfunction due to short-circuit of the microprocessors' pins. In order to reset

the alarm cut off the electrical supply to the device for few seconds. If after

attempting to reset, the indication is still present, the device has to be sent back

to the manufacturer for inspection.

FIXED (1)

Malfunction due to a jump code program. The failure could be temporary or

definitive and the causes could be related to incorrect or inadequate electrical

connections of the device. In order to reset the alarm cut off the electrical sup-

ply to the device for few seconds. If after attempting to reset, the indication is

still present, the device has to be sent back to the manufacturer for inspection.

DISPLAY AND

BARGRAPH

BLINKING

Malfunction due to a jump code program. The failure could be temporary or

definitive and the causes could be related to incorrect or inadequate electrical

connections of the device. In order to reset the alarm cut off the electrical sup-

ply to the device for few seconds. If after attempting to reset, the indication is

still present, the device has to be sent back to the manufacturer for inspection.

(1): The indication of these failures or lockout conditions starts flashing when power is supplied again, indicating that alarm reset is

possible.

ESA ESTRO - E7014 rev. 03 - 22/10/10


BARGRAPH

ESA ESTRO is equipped with a 5 LED bargraph to show

the value of flame detected signals in a range from 0µA

to 90µA. In case of detection currents higher than 90µA

all the LED remain lighted. The flame detection signals

generated via an electrode (ionization) are normally

lower than those generated via a UV scanner; neverthe-

less in both cases the bargraph shows the stability of the

flame signal and therefore the reliability of the burner.

LOCAL PUSH BUTTON

ESA ESTRO allows the configuration of the push button

operation according to its application requirements (see

chapter Configuration). The push button may carry out


FIXEDConfiguration phase of the device via serial input (based on the dedicated soft-

ware). During this phase the it is not possible to carry out any other operation.

FIXED

Configuration phase of the device via infrared input (based on the dedicated

software). During this phase the it is not possible to carry out any other opera-

tion.

Configuration

the manual operations of unlocking and shut-off, only

manual unlocking, only manual shut-off and it can be

deactivated in case of serial communication modes.

According to its function the button action can be different:

¾¾Unlocking: the push button has to be pressed for 1 to3 sec. and when released it unlocks the ESA ESTRO.

¾¾Manual shutoff: the push button immediately stops theESA ESTRO when pressed.

ESA ESTRO - E7014 rev. 03 - 22/10/10


ACTIONS

BURNER IGNITION CYCLE

The scheme describes the burner ignition cycle operation when ESA ESTRO is provided with an EXP-2 expansion

card.

D701409

ESA ESTRO is a programmable device designed to con-

trol gas and oil fired burners in different modes according

to the process parameters set (see chapter

Configuration). Hereinafter its main actions are descri-

bed.

ESA ESTRO - E7014 rev. 03 - 22/10/10


BURNER IGNITION CYCLE

The scheme describes the burner ignition cycle operation when ESA ESTRO is in standard version, without the EXP-

2 expansion card.

OPERATION AT POWER SUPPLY

The following schemes describe the ESA ESTRO actions at power supply, according to the configured parameter

"Cycle start" if set as "Autostart" or as "Standby".

D701410

D701411

COMPLETE CYCLE

AUTOSTART

ESA ESTRO - E7014 rev. 03 - 22/10/10


STANDBY

The following schemes describe the ESA ESTRO-B ignition cycle without expansion EXP-2 card version.

ILLEGAL FLAME PRESENCE

The scheme describes the ESA ESTRO actions in case of illegal flame signal before burner ignition or after shut-off.

D701412

D701413

STAND-BY

IN FAULT “d”

ESA ESTRO - E7014 rev. 03 - 22/10/10


FAILED IGNITION

The scheme describes the actions in case of failed ignition attempt at 1st gas stage.

FLAME SIGNAL LOST

The scheme describes the actions in case of flame signal loss during the normal operation stage and in case of set-

ting of the parameter "Flame loss" as "Lockout".

D701414

D701415

IN FAULT “U”

IN FAULT “F”

ESA ESTRO - E7014 rev. 03 - 22/10/10


CONFIGURATION: SETTING PARAMETERS

The configuration defines the operation mode of ESA

ESTRO according to the combustion plant needs.

In compliance with the reference norm, some of the para-

meters are set and locked at the device's production faci-

lity, while others can be modified by the user with dedica-

ted tools.

The variation of setting parameters can be done only if

ESA ESTRO is in "manual stop" phase and can be done

via a portable programming device (infrared) to modify

the serial communication parameters (i.e. device IP

Unlocked setting parameters

PARAMETER VALUE DESCRIPTION

Address

Segment

0 ÷ 9 and

A ÷ Z capital

"Address Node" identifies the device for serial communication. Adopting

ECS protocol defines the zone or belonging group. Adopting Modbus-RTU

defines the first char of the address (0÷F per 0÷16).

Address Node0 ÷ 9 and

A ÷ Z capital

"Address Segment" identifies the device for serial communication. Adopting

ECS protocol defines the device unity inside a zone or belonging group.

Adopting Modbus-RTU defines the second char of the address (0÷9).

Baudrate

Protocol

4800 ÷ 38400

ECS

Communication speed with ECS protocol (4800, 9600, 19200 and 38400

Bit/s).

4800 ÷ 38400

ModbusRTU 1

Communication speed (4800, 9600, 19200 e 38400 Bit/s) with Modbus

RTU protocol (1 stop bit).

4800 ÷ 38400

ModbusRTU 2

Communication speed with Modbus RTU protocol (4800, 9600, 19200 and

38400 Bit/s).

Communication

timeout0 ÷ 480

Time limit for serial communication signal absence, set in ten steps from 0

to 480 sec., the device signals a "Com-timeout" alarm in case this time is

exceeded. Setting at "0" sec. this parameter deactivates the com-timeout

alarm when the serial communication is not adopted.

Prepurge time 0 ÷ 255

Time of furnace chamber purging or waiting before burner ignition. In case

of applications with air valve control, the countdown starts when the posi-

tion switch signals the maximum valve opening.

Regulation delay

time - 2°safety

time

0 ÷ 25

Waiting time after the flame stability check at 1st stage; Once this phase

has been concluded the air valve opening is allowed (for ESTRO-A and

expansions). For ESA ESTRO-B this period refers to the second safety

time (ignition 2°gas stage), therefore the setting parameter is locked.

Moreover once this time lapse has passed the 1st stage is turned off in

case of discontinuous setting.

Postpurge time 0 ÷ 255

Time of furnace chamber purging after shut-off or waiting before next bur-

ner ignition (air valve opening in case of applications with air valve control).

During this phase the device doesn't accept any external commands. The

function "Post purge flex" defines the minimum interval of time between two

ignition attempts.

address) or through a specific software via serial commu-

nication interface (ECS driver) to modify every unlocked

parameter.

The programming software, moreover, allows the user to

lock some additional setting parameters if needed, for

safety reasons.

The configuration via ECS serial interface is allowed only

for one device at a time and it is necessary to disconnect

the device from the field network as well as the direct con-

nection to the programming PC card interface.

ESA ESTRO - E7014 rev. 03 - 22/10/10



Cycle start

Autostart

The ignition cycle starts automatically at power supply (except for cases of

burner lockout before shut-off). This type of setting is suitable for burner

control via the power supply device.

Standby

The ignition cycle doesn't start automatically at power supply (waiting for

local or remote command). This type of setting is suitable for burner con-

trol via the serial communication.

Daily shut off

Inhibited

The device doesn't turn OFF automatically every 24 hours for self-diagno-

sis. This selection is allowed only for combustion plants with several bur-

ners installed in the same furnace chamber, nevertheless the accompli-

shment of the self-diagnosis shut-off has to be controlled by the overall

control system. If this function is activated, the device only complies to

EN746-2.

EnableThe device turns OFF automatically every 24 hours for self-diagnosis and

flame detection probe test.

Air pressure

switch

Inhibited The air pressure switch connected to the expansion card is not verified.

Waiting

A missing signal from the air pressure switch implies:

- during the purging phase it sets the countdown to zero;

-(with continuous air control) burner shut-off waiting the new signal

presence (automatic restart).

-(with discontinuous or pulse air control, and burner lights the status

will change for deactivation of air)

Lockout

A missing signal from the air pressure switch implies:

- during the purging phase it sets the countdown to zero;

- (with continuous air control) burner shut-off waiting the new signal

presence (reset requested for restart).

- (with discontinuous or pulse air control, and burner lights the status

will change for deactivation of air)

Thermostat

Inhibited The thermostat connected to the expansion card is not verified.

Enable

The device waits for the thermostat signal presence before burner ignition;

in case of signal absence the burner is turned OFF until a new signal is pre-

sent, restart automatically.

Air damper

InhibitedThe air valve position (through the aux. switches) is not verified for purging

and ignition.

Local

The device controls the air valve position: it opens the valve up to the maxi-

mum opening (max. position switch signal) to start the purging time coun-

tdown; then it closes the valve (min. position switch signal) in order to allow

the burner ignition.

Remote

A remote supervisor controls the air valve position: it opens the valve up to

the maximum opening (max. position switch signal) to start the purging

time countdown; then it closes the valve (min. position switch signal) in

order to allow the burner ignition.

ESA ESTRO - E7014 rev. 03 - 22/10/10



EXP Installed

InhibitedThe device doesn't control any expansion cards (this setting is required in

case EXP-2 and EXP-4 are not installed).

EnableThe device controls the installed expansion cards (this setting is required

in case EXP-2 and EXP-4 are installed).

Behaviour at

flame loss

LockoutIn case the signal of flame presence is missing for a period exceeding the

"Reaction time" the burner is turned OFF (reset required for restart).

Recycle

In case the signal of flame presence is missing the device generates a new

ignition cycle (including purging). In case of proper ignition, at the next

signal of missing flame presence the device repeats the ignition cycle.

Respark


ignition cycle (excluding purging). In case of proper ignition, at the next

signal of missing flame presence the device repeats the ignition cycle.

Only one recycle


ignition cycle (including purging). In case of proper ignition, at the next

signal of missing flame presence the device turns OFF the burner (reset

required for restart).

Only one respark

In case the signal of flame presence is missing the device executes a new

ignition cycle (excluded purging). In case of proper ignition, at the next

signal of missing flame presence the device turns OFF the burner (reset

required for restart).

Digital input

function

Inhibited The digital input of the device is not checked.

Reset / Stop

The digital input plays a double role: it leads to the manual burner shut-off

in case the burner was ON or the burner restarts (if activated for a time bet-

ween 1 and 3 sec.) in case the burner was in the lockout stage.

Only stopThe digital input of the device is verified only with burner ON: when activa-

ted leads the manual burner shutoff.

Only resetThe digital input of the device is verified only with burner in lockout stage:

if activated for a time between 1 and 3 sec it restarts the burner.

Thermostat

The digital input has the thermostat function as the digital input foreseen in

the expansion card EXP-2: when the input is active, the device ignites the

burner, whilst when the input is deactivated it determines the burner shut-

off. This setting is allowed only in case the expansion card EXP-2 is not

installed.

High temperature

The digital input is used to activate the specific operation. This setting is

allowed only in compliance with EN746-2 and the activation of this function

is correlated to the "High temperature function" parameter .

Main burner

on / off

The digital input controls the 2nd gas stage as an alternative to the serial

commands: with active input and 1st stage gas ON, the device allows the

ignition of the 2nd stage gas; while with input deactivated it leads to the

burner shut-off.

Air valve on / off

The digital input controls the air valve as an alternative to the serial com-

mands: with active input and 1st stage gas ON, the device allows air valve

opening; while with input deactivated it leads to the valve closure. This fun-

ction can be activated only when the air control is discontinuous.

ESA ESTRO - E7014 rev. 03 - 22/10/10



Lockout output

Stop / fault

The device activates the output signal in case of lockout, manual shut-off

or waiting for power supply (blinking display). The output is deactivated

during the self-diagnosis phase.

Fault

The device activates the output signal only in case of lockout. The output

is deactivated during the self-diagnosis phase, the manual shut-off or wai-

ting for power supply.

Local button

Remote enable

The device doesn't verify the push button because its control is accompli-

shed through serial communication. When the specific command of

request status is received, the device activates the button with "Reset /

Stop" function in order to allow the operation of maintenance with local con-

trol.

Reset / stop

The push button plays a double role: if the burner is ON, it leads to the

immediate shut-off, in case the burner is in lockout phase or is turned OFF,

if pressed for a period between 1 and 3 sec it restarts the burner.

Only stopThe device verifies the push button only in case of burner ON: when pres-

sed it leads to the immediate burner shutoff.

Only reset

The device verifies the push button only in case the burner is in lockout

phase or is turned OFF: if pressed for a time between 1 and 3 sec it restarts

the burner.

Air flow

control type

Continue

The device activates the air valve (or blower) from the initial start command

until the burner shut-off (requested or lockout). If this configuration is pre-

sent, the commands "Air on" and "Air off" are ineffective.

Discontinue


until the end of the purging phase, then the valve is deactivated during the

ignition stage and it again activated again after the "Regulation delay time"

until the burner shut-off (requested or lockout). If this configuration is pre-

sent, the commands "Air on" and "Air off" are effective only after the

"Regulation delay time".

Pulse

The air valve is activated after the "Regulation delay time" until the burner

shut-off (requested or lockout). If this configuration is present, the com-

mands "Air on" and "Air off" are effective for air valve control.

Remote


until the end of the "Regulation delay time". This type of configuration can

be adopted with the expansion card EXP-2.

Postpurge flex

InhibitedThe device starts the "Post purge time" countdown from the burner shut-

off or lockout.

Enable

The device starts the "Post purge time" countdown from the burner igni-

tion. The "Post purge flex" function defines the minimum interval of time

between two ignition attempts.

ESA ESTRO - E7014 rev. 03 - 22/10/10



1° safety time 1 ÷ 25 First safety time for 1st gas stage ignition (see tables for admitted values).

Reaction time 1 ÷ 20

Maximum safety time between the flame extinguishment and the gas valve

interception (see tables for admitted values). In case the flame presence

signal is generated again before the Reaction time ends, the device keeps

the current phase; otherwise it defines the action as per the "Behavior at

flame loss" parameter.

1° stage gas

outlet type

Intermittent

The 1st stage gas remains ON also during the 2nd stage gas until the

simultaneous shut-off of both valves. This setting is allowed only for

ESTRO-B version.

Interrupted

The 1st stage gas is turned OFF during the 2nd stage gas when the second

safety time or "Regulation delay time" (2nd stage stabilization) is exceeded.

This setting is allowed only for ESTRO-B version.

High

temperature

function

InhibitedThe High Temperature Function is never enabled, even in case of specific

digital input signal.

Enable

The High Temperature Function is enabled while a specific digital input

signal is present. In this phase the gas interception valves remain open

even in case of missing signal of flame presence. In case this function is

enabled, the device only complies to EN746-2.

1°stage gas

ignition type

Fixed

The period of 1st gas stage ignition is fixed. The device verifies the flame

formation only after the 1st safety time and after the ignition transformer

deactivation. This configuration is mandatory for unirod or UV-scan flame

detection systems.

Variable

The period of 1st gas stage ignition can be reduced. The device continuou-

sly verifies the flame formation and deactivates the ignition transformer as

soon as the flame is stabilized. This configuration can be applied in case of

flame detection systems with dedicated electrode.

Automatic reset 0 ÷ 9

Maximum number of automatic resets accomplished automatically by the

flame supervisor without generation of a remote signal for burner's lockout.

By setting to 0 this parameter, the function is deactivated. In case this fun-

ction is enabled, the device only complies to EN746-2.

Locked Setting Parameters

ESA ESTRO - E7014 rev. 03 - 22/10/10


The following table shows the maximum safety and reac-

tion times allowed. Refer to the specific norm in order to

define the proper parameters related to each industrial

application, adopting values that do not compromise the

APPLICATION NORM SAFETY TIME REACTION TIME REMARKS

GAS BURNERS

EN298 - Max. 1 sRestart and Respark allo-

wed.

EN676According the

application max. 5 sMax. 1 s

According to the applica-

tion, only 1 Restart allo-

wed. "Pre purge" mode as

claimed

EN746-2According the

application Max. 10 s

According the

application

Max. 2 s


tion, one Restart attempt in

case of flame missing

signal, two automatic

unlocks and high tempera-

ture operation are allowed.

"Pre purge" mode as clai-

med

OIL BURNERS

EN230According the

application Max. 20 sMax. 1 s


tion Restart and Respark

allowed. "Pre purge" mode

as claimed

EN746-2According the

application Max. 10 s

According the

application

Max. 2 s


tion, one Restart attempt in

case of flame missing

signal, two automatic

unlocks and high tempera-

ture operation are allowed.

"Pre purge" mode as clai-

med

process safety. In case the setting parameters are not in

compliance with EN298 but only with EN746-2, the

ESTRO identification plate reports only this norm.

ESA ESTRO - E7014 rev. 03 - 22/10/10


INSTALLATION

Respect the following instructions for a correct installa-

tion.

1 - Avoid placing the equipment near intense magnetic or

electric fields, and in conditions of direct exposure to heat

or products resulting from combustion, such as corrosive

liquids, solvents or gases.

2 - The equipment must be installed by technically quali-

fied staff, in compliance with the regulations in force at the

time and in the place of installation.

3 - A minimum protection class of IP40 must be always

guaranteed for the device case during the installation

operation. For devices applied in open environments a

protection class of IP54 must be always guaranteed. The

protection class (i.e. IP54) can be guaranteed also from

the instrument where the device is installed (i.e. furnace's

electrical control panel).

4 - With phase-phase power supply system, an insulation

transformer with a terminal of secondary coil put to earth

must be applied.

5 - When carrying out the electrical connection, refer to

the technical documentation, observing the polarity bet-

ween the phase and neutral. The terminals for the electric

connection are of the screw type and can accept conduc-

tors with a cross section of 0.5 to 2.5mm²; the choice of

the conductors and the positioning must be suitable for

the application.

6 - The connection cable between the ignition transformer

and the rod on the burner must be specific for high volta-

ge applications and not the shielded type. The HV (High

Voltage) length must be less than the size indicated;

otherwise the ignition transformer must be located near

the burner. The HV cable must be laid far from the power

supply cables and not in metallic ducts, ideally the cable

should be left in open air.

7 - The flame detection cables must be laid separately

from the other conductors and therefore the use of multi-

pair cables is not permitted, nor is the use of shielded

cables.

8 - The detection probes and any connectors must be

insulated and made inaccessible by using suitable

guards, thereby allowing access only to authorized staff;

if needed, warnings should be placed near the probes.

9 - Always make sure that the earth protection is connec-

ted to the appropriate terminals and to all the metal

casings of the elements connected with suitable conduc-

tors. Use the available screw placed in the base of the

device, for earth wiring.

10 - When using the digital input, connect the RC filter,

while the cables entering the expansion cards must be

rolled up at least once around the ferrite supplied.

11 - In multiple-burner applications, the parallel connec-

tions of the outputs of several devices are not allowed. If

the system is equipped with a serial interface connection,

please adhere to the special instructions provided for

using the remote-controlled functions.

12 - The communication line must be separated from the

supply line, motor control (inverters) and network voltage.

NEITHER MULTIPAIR NOR SHIELDED cables must be

used.

13 - Use the specific ECS CABLE for communication

lines; as an alternative, we recommend using the bus-bar

system, bearing in mind that a cable of a max. length of

1 m must be used between the bus-bar and the instru-

ment for both communication and power supply lines.

14 - The input cables for the optional EXP-2 card must be

wrapped at least once around the ferrite provided.

ESA ESTRO - E7014 rev. 03 - 22/10/10


WARNINGS

Respect the following instructions for a correct use of the

device.

¾¾ ESA ESTRO is intended for permanent connection tothe electric installation. Inversion of the phase/neutral

connection could compromise the safety of the system.

Never use different phases between the voltage inputs

and do not apply voltage signals into output or serial

communication terminals.

¾¾ Check that it is connected correctly after installation.Before powering the device, ensure that the voltage and

frequency is correct, and check that the loads do not

have greater absorption than the maximum capacity of

the output contacts.

¾¾ The thermostat inputs (digital input or on expansion)are not safety inputs, but only command the burner start

and stop for temperature regulation. Disconnect the

power supply to obtain a safety shut-down. The same

advice is valid for the devices controlled by serial com-

munication.

¾¾ When the function of digital input is Reset/Stop, OnlyReset or Only Stop, the digital input command must be

a pulse and must not be present during the device dia-

gnosis (after power on, etc). In case the function of digi-

tal input is Thermostat, Main On/Off or Air On/Off, the

command must be continuous and can be maintained

during the device diagnosis.

¾¾ The solenoid gas valve power supply must be takenonly by the specific output of the ESA ESTRO.

¾¾ The control of solenoid gas valves by other devices(relay, PLC) that receive the signal by the ESA ESTRO

is not permitted.

¾¾ In case of noises during the ignition phase, due to thepresence of other electrical equipment, it is mandatory to

adopt a plug connector provided with filter against noises

for the ignition electrode.

¾¾ In case of single electrode ignition/detection it isnecessary to adopt ignition transformers specifically desi-

gned for this purpose.

¾¾ In order to avoid the overheating of the electrical con-trol devices (solenoid valves and transformers) it is

requested to keep a minimum time lapse between the

ignition attempts. The minimum time should be calculated

as follows: the sum of the purging time + the first safety

time + 5 additional sec.

¾¾ The choice of the setting parameters has to be madein compliance with the specific reference norms, but also

with the aim of avoiding potential risks related to particu-

lar operating conditions of the combustion unit.

¾¾ Disconnect power supply before accomplishing anykind of operation on the device. Number each connector

before disconnecting the device.

¾¾ In case of malfunctioning ESA ESTRO must be sentback to the manufacturer for inspection and maintenance.

The warranty of the device automatically expires if any

type of repair or alteration is realized by unauthorized

technicians, due to the fact that the safety of the device

has been compromised.

¾¾ESA ESTRO is a device developed to supervise burnersafety. It cannot be adopted as a system for burner regu-

lation: this type of control has to be done using proper

instruments.

ESA ESTRO - E7014 rev. 03 - 22/10/10


ESA ESTRO-A CONNECTIONS

Pos. Description

e Digital input

f Detection flame with UV phototube

g Detection flame with rod

h Detection flame with unirod

Pos. Description

a ECS serial communication

b Power

c Safety stop

d Lockout alarm output

Pos. Description

6 Air valve neutral

7 Ignition transformer phase

8 Ignition transformer neutral

9Detection rod, signal from transformer (uni-

rod) or UV phototube negative terminal

10Protection ground, UV phototube positive

terminal and burner case

+ Positive input for serial communication

- Negative input for serial communication

Pos. Description

L Power supply phase

N Power supply neutral

1 Lockout signal output (phase)

2 Digital input (phase)

3 1st stage gas valve phase

4 1st stage gas valve neutral

5 Air valve phase

Connector terminals

D701416

ESA ESTRO - E7014 rev. 03 - 22/10/10


ESA ESTRO-B CONNECTIONS

Pos. Description

e Digital input

f Flame detection with UV phototube

g Flame detection with rod

h Flame detection with unirod

Pos. Description


b Power

c Safety stop


Pos. Description

6 2nd stage gas valve neutral



9Detection rod, signal from transformer (uni-

rod) or UV phototube negative terminal

10Protection ground, UV phototube positive ter-

minal and burner case



Pos. Description

A Lockout signal output (phase)

B Digital input (phase)

1 Power supply phase

2 Power supply neutral



5 2nd stage gas valve phase

Connector terminals

D701417

ESA ESTRO - E7014 rev. 03 - 22/10/10


ESA ESTRO-C CONNECTIONS

Pos. Description

e Digital input




Pos. Description


b Power

c Safety stop


Pos. Description

6 Burner ON free contact output (NO)



9Detection rod, signal from transformer (unirod)

or UV phototube negative terminal

10Protection ground, UV phototube positive ter-




Pos. Description

A Lockout signal output (phase)

B Digital input (phase)

1 Power supply phase

2 Power supply neutral



5 Burner ON free contact output (Com)

Connector terminals

D701418

ESA ESTRO - E7014 rev. 03 - 22/10/10


ESA ESTRO-Q CONNECTIONS

Pos. Description




Pos. Description


b Power

c Safety stop

Pos. Description

N 1st stage gas valve neutral

T Ignition transformer phase

N Ignition transformer neutral

FDetection rod, signal from transformer (unirod)

or UV phototube negative terminal

GProtection ground, UV phototube positive ter-




Pos. Description

L Power supply phase

N Power supply neutral

* Not connected



* Not connected

V 1st stage gas valve phase

Connector terminals

D701419

ESA ESTRO - E7014 rev. 03 - 22/10/10


ESA-EXP 2 CONNECTIONS

Pos. Description

k Air damper position switch

l Process input

m Air valve or combustion blower

Pos. Description


i Temperature regulator

j Air damper motor

Pos. Description

18 Air damper hi-fire switch input (phase)

19 Air damper limit switch inputs common (neutral)

20 Thermostat start/stop input (phase)

21 Air pressure switch input (phase)

22 Process limits inputs common (neutral)

23Input power supply for air valve or combu-

stion blower (phase)

24Output power supply for air valve or combu-

stion blower (phase)

Pos. Description

11 Positive input for serial communication

12 Negative input for serial communication

13Temperature regulation enabling output

(phase)

14 Air damper closing output (phase)

15 Air damper opening output (phase)

16 Air damper motor power supply (phase)

17 Air damper lo-fire switch input (phase)

Connector terminals

D701420

ESA ESTRO - E7014 rev. 03 - 22/10/10


SIZES

POS. DESCRIPTION

A Fastening connections for transformer

C Available (Not used)

D Available (Not used)

E - E Available (Not used)

F Terminal earthing

G - GFixing holes for collar fixed back

(tube ½") - screw M6

PREFORMED

HOLES

DIAMETER

MMCONNECTOR

1 19 PG11 - M20x1

2-3-4-5-12 16 PG9 - M16x1

6-8-10-11 * 16 PG9 - M16x1

7-9 * 19 PG11 - M20x1

120

G

5

F

3 1

4 2

G

E E

9

A

6

8

11

7

10A

D

C

7

57

33

110

20

16

21

21

38

7 4

19 18.5 18.5 18.5 23 22.5

8

20 21.5 18.5 18.5 21.5 20

96

50 46

200

A A

12

17

1

* When transformer is present, it is not possible to use

preformed holes No. 6÷11

When EXP-2 expansion card is present, it is not possible to assemble ignition transformer inside ESA ESTRO; in this

case, use ESA TRAFO box (see technical sheet E5004).

D701421

Fixing holes

Internal base view base front

ESA ESTRO - E7014 rev. 03 - 22/10/10


ORDERING CODE

ESTRO

(**): insert value (in seconds)

(Parameter 25) Some selections are not compatible with each other (see "Size"), if there are more possible selections (T e C, 2 e C o A, etc) the code priority must be

as follows: expansion card, cabling, ignition transformer and finally the coupled ESA TRAFO.

VERSION

ESTRO - A

ESTRO - B

ESTRO - C

ESTRO - Q

A2

B2

C2

Q2

01

01

20

CYCLE START

Automatic ignition (autostart)

Wait for manual reset (standby)

A

S

02

1 ST STAGE GAS OUTLET TYPE

Intermittent (continous)

Interrupted

C

D

06

LOCK OUTPUT

Active only with lockout

Active with lockout and stop

F

B

14

DAILY CHECK SHUT OFF

Enable (test every 24h)

Inhibited

D

/

11

SUPPLY VOLTAGE

115 Vac

230 Vac

1

2

08

POSTPURGE FLEX

Inhibited

Enable

/

F

09

1 ST SAFETY TIME

from 0 to 25 seconds (**)

04

SPARE

/

23

SPARE

/

24

25

REGULATION DELAY TIME

from 0 to 25 seconds (**)

05

AUTOMATIC RESET

Reset number 0-9

16

HIGH TEMPERATURE FUNCTION

Inhibited

Enable

/

H

17

1 ST STAGE GAS IGNITION TYPE

Fixed safety time

Variable safety time

/

S

18

REACTION TIME

From 1 to 9 seconds

From 10 to 20 seconds

1 - 9

A - K

19

PREPURGE

from 0 to 99 seconds

2 minute

3 minute

4 minute

(**)

2M

3M

4M

03

AIR FLOW CONTROL MODE

Continue or not present

Discontinue

Pulse

Remote

C

D

P

R

12

POSTPURGE TIME

From 0 to 99 seconds

2 minute

3 minute

4 minute

(**)

2M

3M

4M

10

LOCAL BUTTON

Stop/reset

Stop/reset enabled from remote

Only stop

Only reset

B

R

S

U

15

COMMUNICATION BAUDRATE

4800

9600

19200

38400

4

9

1

3

21

EXPANSION PARAMETERS

No expansion

EXP-2

EXP-3

EXP-4

////

see. tab. A

see.E7015

see.E7016

26

27

28

29

COMMUNICATION PROTOCOL

ECS

MODBUS 1

MODBUS 2

E

1

2

22

BEHAVIOR AT FLAME LOSS

Lock-out stop

Cycle repetition enabled

Re-ignition enabled

Only one cycle repetiton

Only one re-ignition

N

Y

K

R

S

07

DIGITAL INPUT FUNCTION

Inhibited

Reset/stop

Only stop

Only reset

Thermostat

High temperature enabling

Main ON/OFF function

Air ON/OFF function

/

B

S

U

T

H

M

A

13

SPECIAL VERSION

Standard

Ignition transformer inside

Pre wiring

ESA TRAFO coupled box

With expansion EXP-2



/

T

C

A

2

3

4

COMMUNICATION TIMEOUT

0 seconds

8 seconds

16 seconds

32 seconds

64 seconds

128 seconds

256 seconds

320 seconds

400 seconds

480 seconds

0

1

2

3

4

5

6

7

8

9

Tab. A - EXP-2 Expansion parameters

26 Supply voltage 27 Air pressure switch 28 Thermostat input 29 Air damper input

115 Vac

230 Vac

24 Vac

1

2

4

Inhibeted

Puts in waiting phase

Stop in lock-out status

/

H

L

Inhibited

Enable

/

T

Inhibited

Remote serial control

Local digital control

/

R

L

02 03 04 05

17 18 19 20 21 22 23 24 25 26 27 28 29

06 07 08 09 10 11 12 13 14 15 16

Documents

Pyronices Estro Burner Control,Pyronics Estro-A,Pyronics ... · tion, the operator must avoid all contact with the burner and its control devices during the ignition phase and while